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/*
* Javascript EXIF Reader - jQuery plugin 0.1.3
* Copyright (c) 2008 Jacob Seidelin, cupboy@gmail.com, http://blog.nihilogic.dk/
* Licensed under the MPL License [http://www.nihilogic.dk/licenses/mpl-license.txt]
*/
/*
* I added three functions for read EXIF from dataURL
* - getImageDataFromDataURL
* - getDataFromDataURL
* - jQuery.fn.exifLoadFromDataURL
*
* http://orientation.gokercebeci.com
* @gokercebeci
*/
(function() {
var BinaryFile = function(strData, iDataOffset, iDataLength) {
var data = strData;
var dataOffset = iDataOffset || 0;
var dataLength = 0;
this.getRawData = function() {
return data;
}
if (typeof strData == "string") {
dataLength = iDataLength || data.length;
this.getByteAt = function(iOffset) {
return data.charCodeAt(iOffset + dataOffset) & 0xFF;
}
} else if (typeof strData == "unknown") {
dataLength = iDataLength || IEBinary_getLength(data);
this.getByteAt = function(iOffset) {
return IEBinary_getByteAt(data, iOffset + dataOffset);
}
}
this.getLength = function() {
return dataLength;
}
this.getSByteAt = function(iOffset) {
var iByte = this.getByteAt(iOffset);
if (iByte > 127)
return iByte - 256;
else
return iByte;
}
this.getShortAt = function(iOffset, bBigEndian) {
var iShort = bBigEndian ?
(this.getByteAt(iOffset) << 8) + this.getByteAt(iOffset + 1)
: (this.getByteAt(iOffset + 1) << 8) + this.getByteAt(iOffset)
if (iShort < 0)
iShort += 65536;
return iShort;
}
this.getSShortAt = function(iOffset, bBigEndian) {
var iUShort = this.getShortAt(iOffset, bBigEndian);
if (iUShort > 32767)
return iUShort - 65536;
else
return iUShort;
}
this.getLongAt = function(iOffset, bBigEndian) {
var iByte1 = this.getByteAt(iOffset),
iByte2 = this.getByteAt(iOffset + 1),
iByte3 = this.getByteAt(iOffset + 2),
iByte4 = this.getByteAt(iOffset + 3);
var iLong = bBigEndian ?
(((((iByte1 << 8) + iByte2) << 8) + iByte3) << 8) + iByte4
: (((((iByte4 << 8) + iByte3) << 8) + iByte2) << 8) + iByte1;
if (iLong < 0)
iLong += 4294967296;
return iLong;
}
this.getSLongAt = function(iOffset, bBigEndian) {
var iULong = this.getLongAt(iOffset, bBigEndian);
if (iULong > 2147483647)
return iULong - 4294967296;
else
return iULong;
}
this.getStringAt = function(iOffset, iLength) {
var aStr = [];
for (var i = iOffset, j = 0; i < iOffset + iLength; i++, j++) {
aStr[j] = String.fromCharCode(this.getByteAt(i));
}
return aStr.join("");
}
this.getCharAt = function(iOffset) {
return String.fromCharCode(this.getByteAt(iOffset));
}
this.toBase64 = function() {
return window.btoa(data);
}
this.fromBase64 = function(strBase64) {
data = window.atob(strBase64);
}
}
var BinaryAjax = (function() {
function createRequest() {
var oHTTP = null;
if (window.XMLHttpRequest) {
oHTTP = new XMLHttpRequest();
} else if (window.ActiveXObject) {
oHTTP = new ActiveXObject("Microsoft.XMLHTTP");
}
return oHTTP;
}
function getHead(strURL, fncCallback, fncError) {
var oHTTP = createRequest();
if (oHTTP) {
if (fncCallback) {
if (typeof(oHTTP.onload) != "undefined") {
oHTTP.onload = function() {
if (oHTTP.status == "200") {
fncCallback(this);
} else {
if (fncError)
fncError();
}
oHTTP = null;
};
} else {
oHTTP.onreadystatechange = function() {
if (oHTTP.readyState == 4) {
if (oHTTP.status == "200") {
fncCallback(this);
} else {
if (fncError)
fncError();
}
oHTTP = null;
}
};
}
}
oHTTP.open("HEAD", strURL, true);
oHTTP.send(null);
} else {
if (fncError)
fncError();
}
}
function sendRequest(strURL, fncCallback, fncError, aRange, bAcceptRanges, iFileSize) {
var oHTTP = createRequest();
if (oHTTP) {
var iDataOffset = 0;
if (aRange && !bAcceptRanges) {
iDataOffset = aRange[0];
}
var iDataLen = 0;
if (aRange) {
iDataLen = aRange[1] - aRange[0] + 1;
}
if (fncCallback) {
if (typeof(oHTTP.onload) != "undefined") {
oHTTP.onload = function() {
if (oHTTP.status == "200" || oHTTP.status == "206" || oHTTP.status == "0") {
this.binaryResponse = new BinaryFile(this.responseText, iDataOffset, iDataLen);
this.fileSize = iFileSize || this.getResponseHeader("Content-Length");
fncCallback(this);
} else {
if (fncError)
fncError();
}
oHTTP = null;
};
} else {
oHTTP.onreadystatechange = function() {
if (oHTTP.readyState == 4) {
if (oHTTP.status == "200" || oHTTP.status == "206" || oHTTP.status == "0") {
this.binaryResponse = new BinaryFile(oHTTP.responseBody, iDataOffset, iDataLen);
this.fileSize = iFileSize || this.getResponseHeader("Content-Length");
fncCallback(this);
} else {
if (fncError)
fncError();
}
oHTTP = null;
}
};
}
}
oHTTP.open("GET", strURL, true);
if (oHTTP.overrideMimeType)
oHTTP.overrideMimeType('text/plain; charset=x-user-defined');
if (aRange && bAcceptRanges) {
oHTTP.setRequestHeader("Range", "bytes=" + aRange[0] + "-" + aRange[1]);
}
oHTTP.setRequestHeader("If-Modified-Since", "Sat, 1 Jan 1970 00:00:00 GMT");
oHTTP.send(null);
} else {
if (fncError)
fncError();
}
}
return function(strURL, fncCallback, fncError, aRange) {
if (aRange) {
getHead(
strURL,
function(oHTTP) {
var iLength = parseInt(oHTTP.getResponseHeader("Content-Length"), 10);
var strAcceptRanges = oHTTP.getResponseHeader("Accept-Ranges");
var iStart, iEnd;
iStart = aRange[0];
if (aRange[0] < 0)
iStart += iLength;
iEnd = iStart + aRange[1] - 1;
sendRequest(strURL, fncCallback, fncError, [iStart, iEnd], (strAcceptRanges == "bytes"), iLength);
}
);
} else {
sendRequest(strURL, fncCallback, fncError);
}
}
}());
document.write(
"<script type='text/vbscript'>\r\n"
+ "Function IEBinary_getByteAt(strBinary, iOffset)\r\n"
+ " IEBinary_getByteAt = AscB(MidB(strBinary,iOffset+1,1))\r\n"
+ "End Function\r\n"
+ "Function IEBinary_getLength(strBinary)\r\n"
+ " IEBinary_getLength = LenB(strBinary)\r\n"
+ "End Function\r\n"
+ "</script>\r\n"
);
var EXIF = {};
(function() {
var bDebug = false;
EXIF.Tags = {
// version tags
0x9000: "ExifVersion", // EXIF version
0xA000: "FlashpixVersion", // Flashpix format version
// colorspace tags
0xA001: "ColorSpace", // Color space information tag
// image configuration
0xA002: "PixelXDimension", // Valid width of meaningful image
0xA003: "PixelYDimension", // Valid height of meaningful image
0x9101: "ComponentsConfiguration", // Information about channels
0x9102: "CompressedBitsPerPixel", // Compressed bits per pixel
// user information
0x927C: "MakerNote", // Any desired information written by the manufacturer
0x9286: "UserComment", // Comments by user
// related file
0xA004: "RelatedSoundFile", // Name of related sound file
// date and time
0x9003: "DateTimeOriginal", // Date and time when the original image was generated
0x9004: "DateTimeDigitized", // Date and time when the image was stored digitally
0x9290: "SubsecTime", // Fractions of seconds for DateTime
0x9291: "SubsecTimeOriginal", // Fractions of seconds for DateTimeOriginal
0x9292: "SubsecTimeDigitized", // Fractions of seconds for DateTimeDigitized
// picture-taking conditions
0x829A: "ExposureTime", // Exposure time (in seconds)
0x829D: "FNumber", // F number
0x8822: "ExposureProgram", // Exposure program
0x8824: "SpectralSensitivity", // Spectral sensitivity
0x8827: "ISOSpeedRatings", // ISO speed rating
0x8828: "OECF", // Optoelectric conversion factor
0x9201: "ShutterSpeedValue", // Shutter speed
0x9202: "ApertureValue", // Lens aperture
0x9203: "BrightnessValue", // Value of brightness
0x9204: "ExposureBias", // Exposure bias
0x9205: "MaxApertureValue", // Smallest F number of lens
0x9206: "SubjectDistance", // Distance to subject in meters
0x9207: "MeteringMode", // Metering mode
0x9208: "LightSource", // Kind of light source
0x9209: "Flash", // Flash status
0x9214: "SubjectArea", // Location and area of main subject
0x920A: "FocalLength", // Focal length of the lens in mm
0xA20B: "FlashEnergy", // Strobe energy in BCPS
0xA20C: "SpatialFrequencyResponse", //
0xA20E: "FocalPlaneXResolution", // Number of pixels in width direction per FocalPlaneResolutionUnit
0xA20F: "FocalPlaneYResolution", // Number of pixels in height direction per FocalPlaneResolutionUnit
0xA210: "FocalPlaneResolutionUnit", // Unit for measuring FocalPlaneXResolution and FocalPlaneYResolution
0xA214: "SubjectLocation", // Location of subject in image
0xA215: "ExposureIndex", // Exposure index selected on camera
0xA217: "SensingMethod", // Image sensor type
0xA300: "FileSource", // Image source (3 == DSC)
0xA301: "SceneType", // Scene type (1 == directly photographed)
0xA302: "CFAPattern", // Color filter array geometric pattern
0xA401: "CustomRendered", // Special processing
0xA402: "ExposureMode", // Exposure mode
0xA403: "WhiteBalance", // 1 = auto white balance, 2 = manual
0xA404: "DigitalZoomRation", // Digital zoom ratio
0xA405: "FocalLengthIn35mmFilm", // Equivalent foacl length assuming 35mm film camera (in mm)
0xA406: "SceneCaptureType", // Type of scene
0xA407: "GainControl", // Degree of overall image gain adjustment
0xA408: "Contrast", // Direction of contrast processing applied by camera
0xA409: "Saturation", // Direction of saturation processing applied by camera
0xA40A: "Sharpness", // Direction of sharpness processing applied by camera
0xA40B: "DeviceSettingDescription", //
0xA40C: "SubjectDistanceRange", // Distance to subject
// other tags
0xA005: "InteroperabilityIFDPointer",
0xA420: "ImageUniqueID" // Identifier assigned uniquely to each image
};
EXIF.TiffTags = {
0x0100: "ImageWidth",
0x0101: "ImageHeight",
0x8769: "ExifIFDPointer",
0x8825: "GPSInfoIFDPointer",
0xA005: "InteroperabilityIFDPointer",
0x0102: "BitsPerSample",
0x0103: "Compression",
0x0106: "PhotometricInterpretation",
0x0112: "Orientation",
0x0115: "SamplesPerPixel",
0x011C: "PlanarConfiguration",
0x0212: "YCbCrSubSampling",
0x0213: "YCbCrPositioning",
0x011A: "XResolution",
0x011B: "YResolution",
0x0128: "ResolutionUnit",
0x0111: "StripOffsets",
0x0116: "RowsPerStrip",
0x0117: "StripByteCounts",
0x0201: "JPEGInterchangeFormat",
0x0202: "JPEGInterchangeFormatLength",
0x012D: "TransferFunction",
0x013E: "WhitePoint",
0x013F: "PrimaryChromaticities",
0x0211: "YCbCrCoefficients",
0x0214: "ReferenceBlackWhite",
0x0132: "DateTime",
0x010E: "ImageDescription",
0x010F: "Make",
0x0110: "Model",
0x0131: "Software",
0x013B: "Artist",
0x8298: "Copyright"
}
EXIF.GPSTags = {
0x0000: "GPSVersionID",
0x0001: "GPSLatitudeRef",
0x0002: "GPSLatitude",
0x0003: "GPSLongitudeRef",
0x0004: "GPSLongitude",
0x0005: "GPSAltitudeRef",
0x0006: "GPSAltitude",
0x0007: "GPSTimeStamp",
0x0008: "GPSSatellites",
0x0009: "GPSStatus",
0x000A: "GPSMeasureMode",
0x000B: "GPSDOP",
0x000C: "GPSSpeedRef",
0x000D: "GPSSpeed",
0x000E: "GPSTrackRef",
0x000F: "GPSTrack",
0x0010: "GPSImgDirectionRef",
0x0011: "GPSImgDirection",
0x0012: "GPSMapDatum",
0x0013: "GPSDestLatitudeRef",
0x0014: "GPSDestLatitude",
0x0015: "GPSDestLongitudeRef",
0x0016: "GPSDestLongitude",
0x0017: "GPSDestBearingRef",
0x0018: "GPSDestBearing",
0x0019: "GPSDestDistanceRef",
0x001A: "GPSDestDistance",
0x001B: "GPSProcessingMethod",
0x001C: "GPSAreaInformation",
0x001D: "GPSDateStamp",
0x001E: "GPSDifferential"
}
EXIF.StringValues = {
ExposureProgram: {
0: "Not defined",
1: "Manual",
2: "Normal program",
3: "Aperture priority",
4: "Shutter priority",
5: "Creative program",
6: "Action program",
7: "Portrait mode",
8: "Landscape mode"
},
MeteringMode: {
0: "Unknown",
1: "Average",
2: "CenterWeightedAverage",
3: "Spot",
4: "MultiSpot",
5: "Pattern",
6: "Partial",
255: "Other"
},
LightSource: {
0: "Unknown",
1: "Daylight",
2: "Fluorescent",
3: "Tungsten (incandescent light)",
4: "Flash",
9: "Fine weather",
10: "Cloudy weather",
11: "Shade",
12: "Daylight fluorescent (D 5700 - 7100K)",
13: "Day white fluorescent (N 4600 - 5400K)",
14: "Cool white fluorescent (W 3900 - 4500K)",
15: "White fluorescent (WW 3200 - 3700K)",
17: "Standard light A",
18: "Standard light B",
19: "Standard light C",
20: "D55",
21: "D65",
22: "D75",
23: "D50",
24: "ISO studio tungsten",
255: "Other"
},
Flash: {
0x0000: "Flash did not fire",
0x0001: "Flash fired",
0x0005: "Strobe return light not detected",
0x0007: "Strobe return light detected",
0x0009: "Flash fired, compulsory flash mode",
0x000D: "Flash fired, compulsory flash mode, return light not detected",
0x000F: "Flash fired, compulsory flash mode, return light detected",
0x0010: "Flash did not fire, compulsory flash mode",
0x0018: "Flash did not fire, auto mode",
0x0019: "Flash fired, auto mode",
0x001D: "Flash fired, auto mode, return light not detected",
0x001F: "Flash fired, auto mode, return light detected",
0x0020: "No flash function",
0x0041: "Flash fired, red-eye reduction mode",
0x0045: "Flash fired, red-eye reduction mode, return light not detected",
0x0047: "Flash fired, red-eye reduction mode, return light detected",
0x0049: "Flash fired, compulsory flash mode, red-eye reduction mode",
0x004D: "Flash fired, compulsory flash mode, red-eye reduction mode, return light not detected",
0x004F: "Flash fired, compulsory flash mode, red-eye reduction mode, return light detected",
0x0059: "Flash fired, auto mode, red-eye reduction mode",
0x005D: "Flash fired, auto mode, return light not detected, red-eye reduction mode",
0x005F: "Flash fired, auto mode, return light detected, red-eye reduction mode"
},
SensingMethod: {
1: "Not defined",
2: "One-chip color area sensor",
3: "Two-chip color area sensor",
4: "Three-chip color area sensor",
5: "Color sequential area sensor",
7: "Trilinear sensor",
8: "Color sequential linear sensor"
},
SceneCaptureType: {
0: "Standard",
1: "Landscape",
2: "Portrait",
3: "Night scene"
},
SceneType: {
1: "Directly photographed"
},
CustomRendered: {
0: "Normal process",
1: "Custom process"
},
WhiteBalance: {
0: "Auto white balance",
1: "Manual white balance"
},
GainControl: {
0: "None",
1: "Low gain up",
2: "High gain up",
3: "Low gain down",
4: "High gain down"
},
Contrast: {
0: "Normal",
1: "Soft",
2: "Hard"
},
Saturation: {
0: "Normal",
1: "Low saturation",
2: "High saturation"
},
Sharpness: {
0: "Normal",
1: "Soft",
2: "Hard"
},
SubjectDistanceRange: {
0: "Unknown",
1: "Macro",
2: "Close view",
3: "Distant view"
},
FileSource: {
3: "DSC"
},
Components: {
0: "",
1: "Y",
2: "Cb",
3: "Cr",
4: "R",
5: "G",
6: "B"
}
}
function addEvent(oElement, strEvent, fncHandler)
{
if (oElement.addEventListener) {
oElement.addEventListener(strEvent, fncHandler, false);
} else if (oElement.attachEvent) {
oElement.attachEvent("on" + strEvent, fncHandler);
}
}
function imageHasData(oImg)
{
return !!(oImg.exifdata);
}
function getImageData(oImg, fncCallback)
{
BinaryAjax(
oImg.src,
function(oHTTP) {
console.log('BINARY', oHTTP.binaryResponse);
var oEXIF = findEXIFinJPEG(oHTTP.binaryResponse);
oImg.exifdata = oEXIF || {};
if (fncCallback)
fncCallback();
}
)
}
function getImageDataFromDataURL(oImg, fncCallback)
{
var byteString = atob(oImg.src.split(',')[1]);
var f = new BinaryFile(byteString, 0, byteString.length)
var oEXIF = findEXIFinJPEG(f);
oImg.exifdata = oEXIF || {};
if (fncCallback)
fncCallback();
}
function findEXIFinJPEG(oFile) {
var aMarkers = [];
if (oFile.getByteAt(0) != 0xFF || oFile.getByteAt(1) != 0xD8) {
return false; // not a valid jpeg
}
var iOffset = 2;
var iLength = oFile.getLength();
while (iOffset < iLength) {
if (oFile.getByteAt(iOffset) != 0xFF) {
if (bDebug)
console.log("Not a valid marker at offset " + iOffset + ", found: " + oFile.getByteAt(iOffset));
return false; // not a valid marker, something is wrong
}
var iMarker = oFile.getByteAt(iOffset + 1);
// we could implement handling for other markers here,
// but we're only looking for 0xFFE1 for EXIF data
if (iMarker == 22400) {
if (bDebug)
console.log("Found 0xFFE1 marker");
return readEXIFData(oFile, iOffset + 4, oFile.getShortAt(iOffset + 2, true) - 2);
iOffset += 2 + oFile.getShortAt(iOffset + 2, true);
} else if (iMarker == 225) {
// 0xE1 = Application-specific 1 (for EXIF)
if (bDebug)
console.log("Found 0xFFE1 marker");
return readEXIFData(oFile, iOffset + 4, oFile.getShortAt(iOffset + 2, true) - 2);
} else {
iOffset += 2 + oFile.getShortAt(iOffset + 2, true);
}
}
}
function readTags(oFile, iTIFFStart, iDirStart, oStrings, bBigEnd)
{
var iEntries = oFile.getShortAt(iDirStart, bBigEnd);
var oTags = {};
for (var i = 0; i < iEntries; i++) {
var iEntryOffset = iDirStart + i * 12 + 2;
var strTag = oStrings[oFile.getShortAt(iEntryOffset, bBigEnd)];
if (!strTag && bDebug)
console.log("Unknown tag: " + oFile.getShortAt(iEntryOffset, bBigEnd));
oTags[strTag] = readTagValue(oFile, iEntryOffset, iTIFFStart, iDirStart, bBigEnd);
}
return oTags;
}
function readTagValue(oFile, iEntryOffset, iTIFFStart, iDirStart, bBigEnd)
{
var iType = oFile.getShortAt(iEntryOffset + 2, bBigEnd);
var iNumValues = oFile.getLongAt(iEntryOffset + 4, bBigEnd);
var iValueOffset = oFile.getLongAt(iEntryOffset + 8, bBigEnd) + iTIFFStart;
switch (iType) {
case 1: // byte, 8-bit unsigned int
case 7: // undefined, 8-bit byte, value depending on field
if (iNumValues == 1) {
return oFile.getByteAt(iEntryOffset + 8, bBigEnd);
} else {
var iValOffset = iNumValues > 4 ? iValueOffset : (iEntryOffset + 8);
var aVals = [];
for (var n = 0; n < iNumValues; n++) {
aVals[n] = oFile.getByteAt(iValOffset + n);
}
return aVals;
}
break;
case 2: // ascii, 8-bit byte
var iStringOffset = iNumValues > 4 ? iValueOffset : (iEntryOffset + 8);
return oFile.getStringAt(iStringOffset, iNumValues - 1);
break;
case 3: // short, 16 bit int
if (iNumValues == 1) {
return oFile.getShortAt(iEntryOffset + 8, bBigEnd);
} else {
var iValOffset = iNumValues > 2 ? iValueOffset : (iEntryOffset + 8);
var aVals = [];
for (var n = 0; n < iNumValues; n++) {
aVals[n] = oFile.getShortAt(iValOffset + 2 * n, bBigEnd);
}
return aVals;
}
break;
case 4: // long, 32 bit int
if (iNumValues == 1) {
return oFile.getLongAt(iEntryOffset + 8, bBigEnd);
} else {
var aVals = [];
for (var n = 0; n < iNumValues; n++) {
aVals[n] = oFile.getLongAt(iValueOffset + 4 * n, bBigEnd);
}
return aVals;
}
break;
case 5: // rational = two long values, first is numerator, second is denominator
if (iNumValues == 1) {
return oFile.getLongAt(iValueOffset, bBigEnd) / oFile.getLongAt(iValueOffset + 4, bBigEnd);
} else {
var aVals = [];
for (var n = 0; n < iNumValues; n++) {
aVals[n] = oFile.getLongAt(iValueOffset + 8 * n, bBigEnd) / oFile.getLongAt(iValueOffset + 4 + 8 * n, bBigEnd);
}
return aVals;
}
break;
case 9: // slong, 32 bit signed int
if (iNumValues == 1) {
return oFile.getSLongAt(iEntryOffset + 8, bBigEnd);
} else {
var aVals = [];
for (var n = 0; n < iNumValues; n++) {
aVals[n] = oFile.getSLongAt(iValueOffset + 4 * n, bBigEnd);
}
return aVals;
}
break;
case 10: // signed rational, two slongs, first is numerator, second is denominator
if (iNumValues == 1) {
return oFile.getSLongAt(iValueOffset, bBigEnd) / oFile.getSLongAt(iValueOffset + 4, bBigEnd);
} else {
var aVals = [];
for (var n = 0; n < iNumValues; n++) {
aVals[n] = oFile.getSLongAt(iValueOffset + 8 * n, bBigEnd) / oFile.getSLongAt(iValueOffset + 4 + 8 * n, bBigEnd);
}
return aVals;
}
break;
}
}
function readEXIFData(oFile, iStart, iLength)
{
if (oFile.getStringAt(iStart, 4) != "Exif") {
if (bDebug)
console.log("Not valid EXIF data! " + oFile.getStringAt(iStart, 4));
return false;
}
var bBigEnd;
var iTIFFOffset = iStart + 6;
// test for TIFF validity and endianness
if (oFile.getShortAt(iTIFFOffset) == 0x4949) {
bBigEnd = false;
} else if (oFile.getShortAt(iTIFFOffset) == 0x4D4D) {
bBigEnd = true;
} else {
if (bDebug)
console.log("Not valid TIFF data! (no 0x4949 or 0x4D4D)");
return false;
}
if (oFile.getShortAt(iTIFFOffset + 2, bBigEnd) != 0x002A) {
if (bDebug)
console.log("Not valid TIFF data! (no 0x002A)");
return false;
}
if (oFile.getLongAt(iTIFFOffset + 4, bBigEnd) != 0x00000008) {
if (bDebug)
console.log("Not valid TIFF data! (First offset not 8)", oFile.getShortAt(iTIFFOffset + 4, bBigEnd));
return false;
}
var oTags = readTags(oFile, iTIFFOffset, iTIFFOffset + 8, EXIF.TiffTags, bBigEnd);
if (oTags.ExifIFDPointer) {
var oEXIFTags = readTags(oFile, iTIFFOffset, iTIFFOffset + oTags.ExifIFDPointer, EXIF.Tags, bBigEnd);
for (var strTag in oEXIFTags) {
switch (strTag) {
case "LightSource" :
case "Flash" :
case "MeteringMode" :
case "ExposureProgram" :
case "SensingMethod" :
case "SceneCaptureType" :
case "SceneType" :
case "CustomRendered" :
case "WhiteBalance" :
case "GainControl" :
case "Contrast" :
case "Saturation" :
case "Sharpness" :
case "SubjectDistanceRange" :
case "FileSource" :
oEXIFTags[strTag] = EXIF.StringValues[strTag][oEXIFTags[strTag]];
break;
case "ExifVersion" :
case "FlashpixVersion" :
oEXIFTags[strTag] = String.fromCharCode(oEXIFTags[strTag][0], oEXIFTags[strTag][1], oEXIFTags[strTag][2], oEXIFTags[strTag][3]);
break;
case "ComponentsConfiguration" :
oEXIFTags[strTag] =
EXIF.StringValues.Components[oEXIFTags[strTag][0]]
+ EXIF.StringValues.Components[oEXIFTags[strTag][1]]
+ EXIF.StringValues.Components[oEXIFTags[strTag][2]]
+ EXIF.StringValues.Components[oEXIFTags[strTag][3]];
break;
}
oTags[strTag] = oEXIFTags[strTag];
}
}
if (oTags.GPSInfoIFDPointer) {
var oGPSTags = readTags(oFile, iTIFFOffset, iTIFFOffset + oTags.GPSInfoIFDPointer, EXIF.GPSTags, bBigEnd);
for (var strTag in oGPSTags) {
switch (strTag) {
case "GPSVersionID" :
oGPSTags[strTag] = oGPSTags[strTag][0]
+ "." + oGPSTags[strTag][1]
+ "." + oGPSTags[strTag][2]
+ "." + oGPSTags[strTag][3];
break;
}
oTags[strTag] = oGPSTags[strTag];
}
}
return oTags;
}
EXIF.getData = function(oImg, fncCallback)
{
if (!oImg.complete)
return false;
if (!imageHasData(oImg)) {
getImageData(oImg, fncCallback);
} else {
if (fncCallback)
fncCallback();
}
return true;
}
EXIF.getDataFromDataURL = function(oImg, fncCallback)
{
if (!oImg.complete)
return false;
if (!imageHasData(oImg)) {
getImageDataFromDataURL(oImg, fncCallback);
} else {
if (fncCallback)
fncCallback();
}
return true;
}
EXIF.getTag = function(oImg, strTag)
{
if (!imageHasData(oImg))
return;
return oImg.exifdata[strTag];
}
EXIF.getAllTags = function(oImg)
{
if (!imageHasData(oImg))
return {};
var oData = oImg.exifdata;
var oAllTags = {};
for (var a in oData) {
if (oData.hasOwnProperty(a)) {
oAllTags[a] = oData[a];
}
}
return oAllTags;
}
EXIF.pretty = function(oImg)
{
if (!imageHasData(oImg))
return "";
var oData = oImg.exifdata;
var strPretty = "";
for (var a in oData) {
if (oData.hasOwnProperty(a)) {
if (typeof oData[a] == "object") {
strPretty += a + " : [" + oData[a].length + " values]\r\n";
} else {
strPretty += a + " : " + oData[a] + "\r\n";
}
}
}
return strPretty;
}
EXIF.readFromBinaryFile = function(oFile) {
return findEXIFinJPEG(oFile);
}
function loadAllImages()
{
var aImages = document.getElementsByTagName("img");
for (var i = 0; i < aImages.length; i++) {
if (aImages[i].getAttribute("exif") == "true") {
if (!aImages[i].complete) {
addEvent(aImages[i], "load",
function() {
EXIF.getData(this);
}
);
} else {
EXIF.getData(aImages[i]);
}
}
}
}
// automatically load exif data for all images with exif=true when doc is ready
jQuery(document).ready(loadAllImages);
// load data for images manually
jQuery.fn.exifLoad = function(fncCallback) {
return this.each(function() {
EXIF.getData(this, fncCallback)
});
}
// load data for images manually
jQuery.fn.exifLoadFromDataURL = function(fncCallback) {
return this.each(function() {
EXIF.getDataFromDataURL(this, fncCallback)
return true;
});
}
jQuery.fn.exif = function(strTag) {
var aStrings = [];
this.each(function() {
aStrings.push(EXIF.getTag(this, strTag));
});
return aStrings;
}
jQuery.fn.exifAll = function() {
var aStrings = [];
this.each(function() {
aStrings.push(EXIF.getAllTags(this));
});
return aStrings;
}
jQuery.fn.exifPretty = function() {
var aStrings = [];
this.each(function() {
aStrings.push(EXIF.pretty(this));
});
return aStrings;
}
})();
})();
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